1. Reduce the speed: The reducer can convert the high-speed rotation of the prime mover (such as a motor) into the low-speed rotation required by the engraving machine work head, which is particularly important for fine processing.

2. Increase the torque: While reducing the speed, the reducer can also amplify the small torque of the prime mover to the large torque required by the work machine, thereby providing sufficient power for engraving.

3. Reverse stop: When the tool or other working parts of the engraving machine cannot stop or move in the reverse direction immediately, an electronic disk brake can be placed at the output end of the reducer to effectively achieve stop or reverse movement.

4. Transmit power: The reducer transmits power by converting the high-speed rotating motor drive torque into the low-speed torque required by the engraving machine work head, ensuring a smooth and precise engraving process.